/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file has been modified by Huawei to verify type inference by adding verification statements.
*/

// === tests/cases/compiler/specializeVarArgs1.ts ===
declare function AssertType(value:any, type:string):void;
interface Observable<T>{ }

 

interface ObservableArray<T> extends Observable<T[]>

{

    push(...values: T[]);

}

 

function observableArray<T>(): ObservableArray<T> { 
AssertType(null, "null");
return null;
}

 

let a =  observableArray<string>();
AssertType(a, "ObservableArray<string>");
AssertType(observableArray<string>(), "ObservableArray<string>");
AssertType(observableArray, "<T>() => ObservableArray<T>");

a.push('Some Value');
AssertType(a.push('Some Value'), "any");
AssertType(a.push, "(...string[]) => any");
AssertType('Some Value', "string");


